One of the the things I always do for my kids and nephew's birthdays is get blinky lights to hand out as party favors. They are these magnetic pins (or you can use actual pin, comes with both) that flash. Kids LOVE THEM and they are pretty cheap party favor to hand out. The website I always buy from is called blinke. They have lots of other stuff for kids parties too like flashing sunglasses and pretty cheap light sabers (for boys). I'm sure you can find lots of "Pretty in Pink" types of things there. They've got great sparkle too.

My suggestion is to sign up for a free account at Pinterest and do a search for your party theme. I love this website. It is an incredible source of information! Best of luck to you on developing your pretty in pink theme!

this might be a late reply. but i just arranged a party for my daughter last week based on party princess characters theme. everything went just awesome. I would like to share site of organizers here. partyprincessproductions.com